Auto lockouts
Home lockouts
Changing cylinders
Antique locks
Residential and Commercial
Key Replacement

Changing Cylinders
A cylinder is the complete operating unit which usually consists of the "plug shell," "tumblers," "springs," "plug retainer," a cam/tailpiece or other actuating device, and all other necessary operating parts to form your lock. It is easily recognizable as the outside unit where the key goes in a lock on a door.